./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Primes.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/Primes.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/recursive/Primes.c ../results/automizer-verification-files/SV-COMP24_unreach-call/Primes.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 06:25:15,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:25:15,439 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 06:25:15,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:25:15,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:25:15,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:25:15,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:25:15,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:25:15,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:25:15,483 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:25:15,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:25:15,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:25:15,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:25:15,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:25:15,487 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:25:15,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:25:15,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:25:15,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:25:15,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 06:25:15,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:25:15,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:25:15,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:25:15,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:25:15,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:25:15,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:25:15,495 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:25:15,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:25:15,495 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:25:15,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:25:15,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:25:15,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:25:15,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:25:15,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:25:15,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:25:15,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:25:15,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:25:15,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 06:25:15,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 06:25:15,501 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:25:15,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:25:15,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:25:15,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:25:15,502 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:25:15,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:25:15,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:25:15,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:25:15,816 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:25:15,816 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:25:15,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Primes.c [2024-09-13 06:25:17,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:25:17,526 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:25:17,527 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c [2024-09-13 06:25:17,538 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/abc81436d/308a8d7c9d444868bc6d2c64d2586457/FLAGc84c0e414 [2024-09-13 06:25:17,887 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/abc81436d/308a8d7c9d444868bc6d2c64d2586457 [2024-09-13 06:25:17,890 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:25:17,891 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:25:17,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/Primes.yml/witness-2.1.yml [2024-09-13 06:25:17,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:25:17,949 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:25:17,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:25:17,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:25:17,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:25:17,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:25:17" (1/2) ... [2024-09-13 06:25:17,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164fc3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:25:17, skipping insertion in model container [2024-09-13 06:25:17,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:25:17" (1/2) ... [2024-09-13 06:25:17,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10e87397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:25:17, skipping insertion in model container [2024-09-13 06:25:17,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:25:17" (2/2) ... [2024-09-13 06:25:17,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164fc3e2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:17, skipping insertion in model container [2024-09-13 06:25:17,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:25:17" (2/2) ... [2024-09-13 06:25:17,974 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:25:17,975 INFO L1541 ArrayList]: Function contract at [L52]: requires null, ensures ((\old(n) < 3) || (\result == 0)) [2024-09-13 06:25:17,975 INFO L1541 ArrayList]: Function contract at [L31]: requires null, ensures (((((((long long) \old(m) * 2) < ((long long) \old(n) + 1)) || (\old(n) == \old(m))) || (\old(n) == 0)) || ((\old(n) + \old(m)) < 1)) || (\old(m) < 1)) [2024-09-13 06:25:17,976 INFO L1541 ArrayList]: Function contract at [L17]: requires null, ensures ((((2 < \result) || (\result == 0)) || (\old(m) < 2)) || (\old(n) < 2)) [2024-09-13 06:25:17,998 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:25:18,176 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2024-09-13 06:25:18,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:25:18,196 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-13 06:25:18,258 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2024-09-13 06:25:18,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:25:18,280 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:25:18,282 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18 WrapperNode [2024-09-13 06:25:18,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:25:18,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:25:18,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:25:18,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:25:18,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,322 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-09-13 06:25:18,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:25:18,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:25:18,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:25:18,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:25:18,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,339 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,355 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure multiple_of is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 06:25:18,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,364 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:25:18,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:25:18,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:25:18,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:25:18,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (1/1) ... [2024-09-13 06:25:18,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:25:18,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:18,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 06:25:18,416 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 06:25:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2024-09-13 06:25:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2024-09-13 06:25:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:25:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-09-13 06:25:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-09-13 06:25:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2024-09-13 06:25:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2024-09-13 06:25:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 06:25:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:25:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:25:18,530 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:25:18,533 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:25:18,801 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-09-13 06:25:18,801 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:25:18,830 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:25:18,830 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 06:25:18,831 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:25:18 BoogieIcfgContainer [2024-09-13 06:25:18,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:25:18,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:25:18,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:25:18,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:25:18,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:25:17" (1/4) ... [2024-09-13 06:25:18,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8ae2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:25:18, skipping insertion in model container [2024-09-13 06:25:18,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:25:17" (2/4) ... [2024-09-13 06:25:18,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8ae2de and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:25:18, skipping insertion in model container [2024-09-13 06:25:18,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:25:18" (3/4) ... [2024-09-13 06:25:18,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8ae2de and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:25:18, skipping insertion in model container [2024-09-13 06:25:18,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:25:18" (4/4) ... [2024-09-13 06:25:18,841 INFO L112 eAbstractionObserver]: Analyzing ICFG Primes.c [2024-09-13 06:25:18,863 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:25:18,864 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-13 06:25:18,910 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:25:18,916 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;@28979f3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:25:18,917 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-13 06:25:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 40 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 06:25:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-13 06:25:18,928 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:18,929 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:18,929 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:18,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1099352103, now seen corresponding path program 1 times [2024-09-13 06:25:18,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:18,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035933766] [2024-09-13 06:25:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:19,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:19,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035933766] [2024-09-13 06:25:19,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035933766] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:19,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:19,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:25:19,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846944183] [2024-09-13 06:25:19,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:19,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:25:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:25:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:25:19,332 INFO L87 Difference]: Start difference. First operand has 53 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 40 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:19,421 INFO L93 Difference]: Finished difference Result 57 states and 79 transitions. [2024-09-13 06:25:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:25:19,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-09-13 06:25:19,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:19,431 INFO L225 Difference]: With dead ends: 57 [2024-09-13 06:25:19,432 INFO L226 Difference]: Without dead ends: 55 [2024-09-13 06:25:19,433 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:25:19,437 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:19,439 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:25:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-13 06:25:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-09-13 06:25:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 41 states have internal predecessors, (54), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2024-09-13 06:25:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2024-09-13 06:25:19,484 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 9 [2024-09-13 06:25:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:19,485 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2024-09-13 06:25:19,485 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:19,486 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2024-09-13 06:25:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-13 06:25:19,488 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:19,489 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:19,489 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 06:25:19,490 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:19,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash 291538719, now seen corresponding path program 1 times [2024-09-13 06:25:19,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:19,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001421007] [2024-09-13 06:25:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:19,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:19,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:19,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:19,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001421007] [2024-09-13 06:25:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001421007] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:19,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:19,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:25:19,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626145083] [2024-09-13 06:25:19,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:19,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:25:19,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:19,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:25:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:25:19,678 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:19,790 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2024-09-13 06:25:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 06:25:19,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-13 06:25:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:19,792 INFO L225 Difference]: With dead ends: 66 [2024-09-13 06:25:19,793 INFO L226 Difference]: Without dead ends: 66 [2024-09-13 06:25:19,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 06:25:19,794 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 13 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:19,795 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 277 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:25:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-13 06:25:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2024-09-13 06:25:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.4) internal successors, (56), 43 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-13 06:25:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-09-13 06:25:19,810 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 10 [2024-09-13 06:25:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:19,810 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-09-13 06:25:19,810 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-09-13 06:25:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-13 06:25:19,811 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:19,811 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:19,811 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 06:25:19,812 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:19,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:19,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1463084227, now seen corresponding path program 1 times [2024-09-13 06:25:19,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:19,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563541939] [2024-09-13 06:25:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:19,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:19,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:19,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:19,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563541939] [2024-09-13 06:25:19,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563541939] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:19,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:19,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:25:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81600447] [2024-09-13 06:25:19,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:19,956 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:25:19,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:19,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:25:19,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:25:19,957 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:20,036 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2024-09-13 06:25:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:25:20,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-13 06:25:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:20,038 INFO L225 Difference]: With dead ends: 62 [2024-09-13 06:25:20,038 INFO L226 Difference]: Without dead ends: 62 [2024-09-13 06:25:20,038 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 06:25:20,039 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 10 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:20,040 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 293 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:25:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-13 06:25:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2024-09-13 06:25:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.4) internal successors, (56), 43 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-13 06:25:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-09-13 06:25:20,047 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 12 [2024-09-13 06:25:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:20,048 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-09-13 06:25:20,048 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-09-13 06:25:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 06:25:20,049 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:20,049 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:20,050 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 06:25:20,050 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:20,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1523424089, now seen corresponding path program 1 times [2024-09-13 06:25:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:20,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620164589] [2024-09-13 06:25:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:20,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:20,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620164589] [2024-09-13 06:25:20,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620164589] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:20,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:20,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:25:20,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141807515] [2024-09-13 06:25:20,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:20,120 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 06:25:20,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:20,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 06:25:20,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 06:25:20,121 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:20,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:20,212 INFO L93 Difference]: Finished difference Result 64 states and 90 transitions. [2024-09-13 06:25:20,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:25:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-09-13 06:25:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:20,214 INFO L225 Difference]: With dead ends: 64 [2024-09-13 06:25:20,214 INFO L226 Difference]: Without dead ends: 64 [2024-09-13 06:25:20,214 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:25:20,215 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:20,216 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 156 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:25:20,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-13 06:25:20,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2024-09-13 06:25:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.372093023255814) internal successors, (59), 45 states have internal predecessors, (59), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (17), 13 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-13 06:25:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2024-09-13 06:25:20,224 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 14 [2024-09-13 06:25:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:20,224 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2024-09-13 06:25:20,224 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2024-09-13 06:25:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 06:25:20,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:20,225 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:20,225 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 06:25:20,226 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:20,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1221831092, now seen corresponding path program 1 times [2024-09-13 06:25:20,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:20,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567551490] [2024-09-13 06:25:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:20,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:20,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:20,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567551490] [2024-09-13 06:25:20,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567551490] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:20,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:20,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:25:20,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358311539] [2024-09-13 06:25:20,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:20,257 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:25:20,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:25:20,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:25:20,258 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:20,270 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2024-09-13 06:25:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:25:20,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-13 06:25:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:20,272 INFO L225 Difference]: With dead ends: 63 [2024-09-13 06:25:20,272 INFO L226 Difference]: Without dead ends: 62 [2024-09-13 06:25:20,272 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:25:20,273 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:20,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-13 06:25:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-09-13 06:25:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (17), 13 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-13 06:25:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 84 transitions. [2024-09-13 06:25:20,282 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 84 transitions. Word has length 14 [2024-09-13 06:25:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:20,282 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 84 transitions. [2024-09-13 06:25:20,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 84 transitions. [2024-09-13 06:25:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 06:25:20,283 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:20,283 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:20,284 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 06:25:20,284 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:20,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash 18494327, now seen corresponding path program 1 times [2024-09-13 06:25:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:20,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760572943] [2024-09-13 06:25:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:20,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:20,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:20,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760572943] [2024-09-13 06:25:20,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760572943] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:20,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:20,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:25:20,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989248310] [2024-09-13 06:25:20,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:20,346 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:25:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:20,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:25:20,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:25:20,348 INFO L87 Difference]: Start difference. First operand 62 states and 84 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:20,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:20,415 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2024-09-13 06:25:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:25:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-09-13 06:25:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:20,420 INFO L225 Difference]: With dead ends: 79 [2024-09-13 06:25:20,420 INFO L226 Difference]: Without dead ends: 79 [2024-09-13 06:25:20,420 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:25:20,421 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:20,422 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 222 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:25:20,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-13 06:25:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2024-09-13 06:25:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (19), 16 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-13 06:25:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 101 transitions. [2024-09-13 06:25:20,434 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 101 transitions. Word has length 15 [2024-09-13 06:25:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:20,435 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 101 transitions. [2024-09-13 06:25:20,435 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 101 transitions. [2024-09-13 06:25:20,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 06:25:20,439 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:20,439 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:20,439 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-13 06:25:20,439 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting multErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:20,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:20,440 INFO L85 PathProgramCache]: Analyzing trace with hash 205082885, now seen corresponding path program 1 times [2024-09-13 06:25:20,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:20,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477287596] [2024-09-13 06:25:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:20,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:20,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:20,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477287596] [2024-09-13 06:25:20,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477287596] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:20,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:20,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 06:25:20,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829393718] [2024-09-13 06:25:20,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:20,575 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 06:25:20,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 06:25:20,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 06:25:20,589 INFO L87 Difference]: Start difference. First operand 75 states and 101 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:20,632 INFO L93 Difference]: Finished difference Result 84 states and 111 transitions. [2024-09-13 06:25:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 06:25:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-13 06:25:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:20,634 INFO L225 Difference]: With dead ends: 84 [2024-09-13 06:25:20,635 INFO L226 Difference]: Without dead ends: 79 [2024-09-13 06:25:20,635 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 06:25:20,639 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:20,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 373 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-13 06:25:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-09-13 06:25:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 58 states have internal predecessors, (73), 11 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (21), 16 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-13 06:25:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 105 transitions. [2024-09-13 06:25:20,655 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 105 transitions. Word has length 17 [2024-09-13 06:25:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:20,655 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 105 transitions. [2024-09-13 06:25:20,655 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 105 transitions. [2024-09-13 06:25:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 06:25:20,658 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:20,659 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:20,659 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 06:25:20,659 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting multErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:20,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 823654987, now seen corresponding path program 1 times [2024-09-13 06:25:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420849621] [2024-09-13 06:25:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:20,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:20,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420849621] [2024-09-13 06:25:20,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420849621] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:20,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:20,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 06:25:20,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846128202] [2024-09-13 06:25:20,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:20,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:25:20,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:25:20,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:25:20,699 INFO L87 Difference]: Start difference. First operand 79 states and 105 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:20,713 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2024-09-13 06:25:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:25:20,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-13 06:25:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:20,715 INFO L225 Difference]: With dead ends: 81 [2024-09-13 06:25:20,715 INFO L226 Difference]: Without dead ends: 81 [2024-09-13 06:25:20,716 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:25:20,717 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 1 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:20,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 127 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:20,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-13 06:25:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-09-13 06:25:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 59 states have internal predecessors, (74), 11 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (21), 16 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-13 06:25:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2024-09-13 06:25:20,729 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 18 [2024-09-13 06:25:20,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:20,730 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2024-09-13 06:25:20,730 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2024-09-13 06:25:20,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-13 06:25:20,731 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:20,732 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:20,735 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-13 06:25:20,736 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting multErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:20,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:20,736 INFO L85 PathProgramCache]: Analyzing trace with hash -236498330, now seen corresponding path program 1 times [2024-09-13 06:25:20,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:20,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110670643] [2024-09-13 06:25:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:20,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:20,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:20,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110670643] [2024-09-13 06:25:20,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110670643] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:20,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:20,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:25:20,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756852558] [2024-09-13 06:25:20,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:20,797 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 06:25:20,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:20,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 06:25:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 06:25:20,799 INFO L87 Difference]: Start difference. First operand 80 states and 106 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:20,857 INFO L93 Difference]: Finished difference Result 84 states and 114 transitions. [2024-09-13 06:25:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:25:20,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-09-13 06:25:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:20,859 INFO L225 Difference]: With dead ends: 84 [2024-09-13 06:25:20,860 INFO L226 Difference]: Without dead ends: 84 [2024-09-13 06:25:20,861 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:25:20,862 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 9 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:20,863 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 157 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-13 06:25:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2024-09-13 06:25:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 59 states have internal predecessors, (74), 11 states have call successors, (11), 4 states have call predecessors, (11), 9 states have return successors, (21), 16 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-13 06:25:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2024-09-13 06:25:20,877 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 19 [2024-09-13 06:25:20,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:20,878 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2024-09-13 06:25:20,878 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2024-09-13 06:25:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 06:25:20,879 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:20,879 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:20,879 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-13 06:25:20,879 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:20,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:20,880 INFO L85 PathProgramCache]: Analyzing trace with hash 627455585, now seen corresponding path program 1 times [2024-09-13 06:25:20,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:20,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371970092] [2024-09-13 06:25:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:21,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:21,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371970092] [2024-09-13 06:25:21,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371970092] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:25:21,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602996881] [2024-09-13 06:25:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:21,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:21,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:21,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:25:21,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 06:25:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:21,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 06:25:21,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:25:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:21,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:25:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:21,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602996881] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:25:21,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:25:21,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-09-13 06:25:21,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456621005] [2024-09-13 06:25:21,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:25:21,263 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 06:25:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:21,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 06:25:21,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-13 06:25:21,264 INFO L87 Difference]: Start difference. First operand 80 states and 106 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:21,554 INFO L93 Difference]: Finished difference Result 117 states and 153 transitions. [2024-09-13 06:25:21,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 06:25:21,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-09-13 06:25:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:21,558 INFO L225 Difference]: With dead ends: 117 [2024-09-13 06:25:21,558 INFO L226 Difference]: Without dead ends: 117 [2024-09-13 06:25:21,558 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-09-13 06:25:21,559 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 61 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:21,562 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 330 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:25:21,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-09-13 06:25:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2024-09-13 06:25:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 78 states have internal predecessors, (100), 15 states have call successors, (15), 6 states have call predecessors, (15), 12 states have return successors, (28), 22 states have call predecessors, (28), 15 states have call successors, (28) [2024-09-13 06:25:21,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2024-09-13 06:25:21,582 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 21 [2024-09-13 06:25:21,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:21,583 INFO L474 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2024-09-13 06:25:21,583 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:21,583 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2024-09-13 06:25:21,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 06:25:21,585 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:21,585 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:21,607 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 06:25:21,785 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 06:25:21,786 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:21,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1797805098, now seen corresponding path program 1 times [2024-09-13 06:25:21,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:21,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580763829] [2024-09-13 06:25:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:21,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:21,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:21,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 06:25:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:21,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:21,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580763829] [2024-09-13 06:25:21,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580763829] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:21,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:21,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 06:25:21,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442274694] [2024-09-13 06:25:21,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:21,902 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:25:21,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:21,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:25:21,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:25:21,903 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 06:25:21,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:21,950 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2024-09-13 06:25:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:25:21,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-09-13 06:25:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:21,952 INFO L225 Difference]: With dead ends: 111 [2024-09-13 06:25:21,952 INFO L226 Difference]: Without dead ends: 109 [2024-09-13 06:25:21,952 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:25:21,955 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 1 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:21,956 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 304 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:21,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-13 06:25:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-09-13 06:25:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 80 states have internal predecessors, (101), 15 states have call successors, (15), 6 states have call predecessors, (15), 13 states have return successors, (30), 22 states have call predecessors, (30), 15 states have call successors, (30) [2024-09-13 06:25:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 146 transitions. [2024-09-13 06:25:21,969 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 146 transitions. Word has length 22 [2024-09-13 06:25:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:21,969 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 146 transitions. [2024-09-13 06:25:21,969 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 06:25:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 146 transitions. [2024-09-13 06:25:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 06:25:21,970 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:21,970 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:21,971 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-13 06:25:21,971 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:21,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:21,972 INFO L85 PathProgramCache]: Analyzing trace with hash 768263070, now seen corresponding path program 1 times [2024-09-13 06:25:21,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:21,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882617325] [2024-09-13 06:25:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:21,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 06:25:22,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:22,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882617325] [2024-09-13 06:25:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882617325] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:22,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:25:22,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003917821] [2024-09-13 06:25:22,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:22,017 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:25:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:25:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:25:22,018 INFO L87 Difference]: Start difference. First operand 109 states and 146 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:22,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:22,062 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2024-09-13 06:25:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:25:22,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-09-13 06:25:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:22,063 INFO L225 Difference]: With dead ends: 83 [2024-09-13 06:25:22,063 INFO L226 Difference]: Without dead ends: 83 [2024-09-13 06:25:22,064 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:25:22,064 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 26 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:22,064 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 199 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-13 06:25:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-09-13 06:25:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.263157894736842) internal successors, (72), 63 states have internal predecessors, (72), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-13 06:25:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2024-09-13 06:25:22,071 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 24 [2024-09-13 06:25:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:22,071 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2024-09-13 06:25:22,071 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2024-09-13 06:25:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-13 06:25:22,072 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:22,072 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:22,072 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-13 06:25:22,072 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:22,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash 800554609, now seen corresponding path program 1 times [2024-09-13 06:25:22,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386813159] [2024-09-13 06:25:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:22,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:22,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 06:25:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:22,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:22,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386813159] [2024-09-13 06:25:22,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386813159] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:22,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:22,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:25:22,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480911718] [2024-09-13 06:25:22,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:22,117 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:25:22,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:22,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:25:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:25:22,118 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 06:25:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:22,181 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2024-09-13 06:25:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:25:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-09-13 06:25:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:22,182 INFO L225 Difference]: With dead ends: 86 [2024-09-13 06:25:22,182 INFO L226 Difference]: Without dead ends: 84 [2024-09-13 06:25:22,182 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:25:22,183 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 8 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:22,183 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 188 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-13 06:25:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2024-09-13 06:25:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 62 states have internal predecessors, (71), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-13 06:25:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2024-09-13 06:25:22,189 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 23 [2024-09-13 06:25:22,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:22,189 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2024-09-13 06:25:22,189 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 06:25:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2024-09-13 06:25:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 06:25:22,190 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:22,190 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:22,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-13 06:25:22,190 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting multErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:22,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash 614810523, now seen corresponding path program 1 times [2024-09-13 06:25:22,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:22,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584020299] [2024-09-13 06:25:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:22,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:22,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:22,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 06:25:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:25:22,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:22,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584020299] [2024-09-13 06:25:22,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584020299] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:25:22,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695818437] [2024-09-13 06:25:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:22,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:22,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:22,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:25:22,286 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 06:25:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:22,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 06:25:22,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:25:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 06:25:22,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:25:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:25:22,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695818437] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:25:22,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:25:22,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 11 [2024-09-13 06:25:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257393482] [2024-09-13 06:25:22,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:25:22,520 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 06:25:22,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:22,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 06:25:22,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-13 06:25:22,524 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:25:22,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:22,630 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2024-09-13 06:25:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 06:25:22,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2024-09-13 06:25:22,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:22,631 INFO L225 Difference]: With dead ends: 87 [2024-09-13 06:25:22,631 INFO L226 Difference]: Without dead ends: 79 [2024-09-13 06:25:22,632 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-09-13 06:25:22,632 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 30 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:22,633 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 237 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:25:22,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-13 06:25:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-09-13 06:25:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 62 states have internal predecessors, (69), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (16), 11 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-13 06:25:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2024-09-13 06:25:22,636 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 26 [2024-09-13 06:25:22,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:22,637 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2024-09-13 06:25:22,637 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:25:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2024-09-13 06:25:22,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 06:25:22,638 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:22,638 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:22,656 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 06:25:22,839 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 06:25:22,840 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:22,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 127590859, now seen corresponding path program 2 times [2024-09-13 06:25:22,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:22,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183108733] [2024-09-13 06:25:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:23,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183108733] [2024-09-13 06:25:23,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183108733] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:25:23,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206524765] [2024-09-13 06:25:23,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:25:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:23,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:23,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:25:23,009 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 06:25:23,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-13 06:25:23,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:25:23,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 06:25:23,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:25:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-13 06:25:23,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:25:23,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206524765] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:23,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:25:23,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2024-09-13 06:25:23,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678734288] [2024-09-13 06:25:23,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:23,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:25:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:25:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-09-13 06:25:23,109 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:23,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:23,165 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2024-09-13 06:25:23,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:25:23,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-09-13 06:25:23,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:23,166 INFO L225 Difference]: With dead ends: 87 [2024-09-13 06:25:23,167 INFO L226 Difference]: Without dead ends: 87 [2024-09-13 06:25:23,167 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-09-13 06:25:23,167 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:23,168 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 182 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:23,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-13 06:25:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2024-09-13 06:25:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 64 states have internal predecessors, (71), 10 states have call successors, (10), 5 states have call predecessors, (10), 11 states have return successors, (19), 12 states have call predecessors, (19), 9 states have call successors, (19) [2024-09-13 06:25:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-09-13 06:25:23,172 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 27 [2024-09-13 06:25:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:23,172 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-09-13 06:25:23,172 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-09-13 06:25:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-13 06:25:23,173 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:23,173 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:23,191 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 06:25:23,373 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 06:25:23,374 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting multErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:23,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 824286641, now seen corresponding path program 1 times [2024-09-13 06:25:23,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:23,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791947182] [2024-09-13 06:25:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:23,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:23,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 06:25:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 06:25:23,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791947182] [2024-09-13 06:25:23,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791947182] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:25:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885994778] [2024-09-13 06:25:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:23,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:23,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:23,464 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:25:23,465 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 06:25:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:23,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-13 06:25:23,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:25:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 06:25:23,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:25:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885994778] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:23,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:25:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-09-13 06:25:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857955119] [2024-09-13 06:25:23,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:23,551 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:25:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:25:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-13 06:25:23,555 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:25:23,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:23,599 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2024-09-13 06:25:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:25:23,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-09-13 06:25:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:23,600 INFO L225 Difference]: With dead ends: 93 [2024-09-13 06:25:23,600 INFO L226 Difference]: Without dead ends: 91 [2024-09-13 06:25:23,601 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-09-13 06:25:23,601 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 15 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:23,602 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 195 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:23,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-13 06:25:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-09-13 06:25:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 69 states have internal predecessors, (78), 11 states have call successors, (11), 6 states have call predecessors, (11), 11 states have return successors, (19), 13 states have call predecessors, (19), 10 states have call successors, (19) [2024-09-13 06:25:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2024-09-13 06:25:23,608 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 30 [2024-09-13 06:25:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:23,608 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2024-09-13 06:25:23,608 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:25:23,608 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2024-09-13 06:25:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 06:25:23,609 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:23,609 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:23,627 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 06:25:23,809 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:23,810 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting multErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:23,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1901915468, now seen corresponding path program 1 times [2024-09-13 06:25:23,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:23,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144788355] [2024-09-13 06:25:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:23,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:23,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 06:25:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:25:23,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:23,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144788355] [2024-09-13 06:25:23,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144788355] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:25:23,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569655953] [2024-09-13 06:25:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:23,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:23,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:23,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:25:23,895 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 06:25:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:23,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 06:25:23,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:25:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:25:23,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:25:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:25:24,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569655953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:25:24,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:25:24,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-13 06:25:24,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492825533] [2024-09-13 06:25:24,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:25:24,073 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 06:25:24,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:24,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 06:25:24,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-13 06:25:24,074 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 06:25:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:24,167 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2024-09-13 06:25:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 06:25:24,167 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-09-13 06:25:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:24,169 INFO L225 Difference]: With dead ends: 95 [2024-09-13 06:25:24,169 INFO L226 Difference]: Without dead ends: 94 [2024-09-13 06:25:24,169 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-13 06:25:24,170 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 5 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:24,170 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 444 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:25:24,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-13 06:25:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2024-09-13 06:25:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 66 states have internal predecessors, (74), 10 states have call successors, (10), 6 states have call predecessors, (10), 11 states have return successors, (19), 13 states have call predecessors, (19), 10 states have call successors, (19) [2024-09-13 06:25:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2024-09-13 06:25:24,175 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 27 [2024-09-13 06:25:24,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:24,178 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2024-09-13 06:25:24,178 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 06:25:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2024-09-13 06:25:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-13 06:25:24,178 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:24,179 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:24,196 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 06:25:24,379 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-13 06:25:24,379 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:24,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 13306861, now seen corresponding path program 1 times [2024-09-13 06:25:24,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:24,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093953843] [2024-09-13 06:25:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:24,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:24,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 06:25:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:24,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093953843] [2024-09-13 06:25:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093953843] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:25:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892639127] [2024-09-13 06:25:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:24,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:24,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:24,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:25:24,546 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 06:25:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:24,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-13 06:25:24,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:25:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:24,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:25:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:24,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892639127] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:25:24,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:25:24,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 21 [2024-09-13 06:25:24,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344882647] [2024-09-13 06:25:24,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:25:24,928 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 06:25:24,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:24,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 06:25:24,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-09-13 06:25:24,929 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand has 21 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 15 states have internal predecessors, (49), 7 states have call successors, (8), 7 states have call predecessors, (8), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:25:25,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:25,304 INFO L93 Difference]: Finished difference Result 151 states and 183 transitions. [2024-09-13 06:25:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 06:25:25,304 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 15 states have internal predecessors, (49), 7 states have call successors, (8), 7 states have call predecessors, (8), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-09-13 06:25:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:25,305 INFO L225 Difference]: With dead ends: 151 [2024-09-13 06:25:25,305 INFO L226 Difference]: Without dead ends: 144 [2024-09-13 06:25:25,306 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2024-09-13 06:25:25,307 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 117 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:25,307 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 393 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:25:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-13 06:25:25,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 127. [2024-09-13 06:25:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 95 states have internal predecessors, (113), 16 states have call successors, (16), 10 states have call predecessors, (16), 13 states have return successors, (23), 21 states have call predecessors, (23), 16 states have call successors, (23) [2024-09-13 06:25:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 152 transitions. [2024-09-13 06:25:25,312 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 152 transitions. Word has length 30 [2024-09-13 06:25:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:25,313 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 152 transitions. [2024-09-13 06:25:25,313 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 15 states have internal predecessors, (49), 7 states have call successors, (8), 7 states have call predecessors, (8), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:25:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 152 transitions. [2024-09-13 06:25:25,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-13 06:25:25,314 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:25,314 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:25,331 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 06:25:25,517 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-13 06:25:25,518 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:25,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1937323607, now seen corresponding path program 1 times [2024-09-13 06:25:25,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:25,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631638844] [2024-09-13 06:25:25,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:25,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:25:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:25,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 06:25:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:25,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-13 06:25:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:25:25,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631638844] [2024-09-13 06:25:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631638844] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:25:25,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549950999] [2024-09-13 06:25:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:25,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:25,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:25,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:25:25,723 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 06:25:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:25,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 06:25:25,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:25:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:25:25,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:25:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:25:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549950999] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:25:26,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:25:26,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2024-09-13 06:25:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327006616] [2024-09-13 06:25:26,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:25:26,226 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 06:25:26,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 06:25:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2024-09-13 06:25:26,227 INFO L87 Difference]: Start difference. First operand 127 states and 152 transitions. Second operand has 25 states, 22 states have (on average 2.227272727272727) internal successors, (49), 18 states have internal predecessors, (49), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-13 06:25:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:26,576 INFO L93 Difference]: Finished difference Result 154 states and 185 transitions. [2024-09-13 06:25:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 06:25:26,577 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.227272727272727) internal successors, (49), 18 states have internal predecessors, (49), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) Word has length 31 [2024-09-13 06:25:26,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:26,578 INFO L225 Difference]: With dead ends: 154 [2024-09-13 06:25:26,578 INFO L226 Difference]: Without dead ends: 129 [2024-09-13 06:25:26,578 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 06:25:26,579 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 38 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:26,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 495 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:25:26,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-13 06:25:26,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 119. [2024-09-13 06:25:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.146067415730337) internal successors, (102), 90 states have internal predecessors, (102), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (20), 18 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-13 06:25:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2024-09-13 06:25:26,583 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 31 [2024-09-13 06:25:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:26,584 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2024-09-13 06:25:26,584 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.227272727272727) internal successors, (49), 18 states have internal predecessors, (49), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-13 06:25:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2024-09-13 06:25:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-13 06:25:26,584 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:26,584 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:26,605 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 06:25:26,788 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:26,789 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:26,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1927089745, now seen corresponding path program 1 times [2024-09-13 06:25:26,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:26,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618967687] [2024-09-13 06:25:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:26,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:26,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 06:25:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:26,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 06:25:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 06:25:26,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:26,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618967687] [2024-09-13 06:25:26,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618967687] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:26,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:25:26,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:25:26,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319729147] [2024-09-13 06:25:26,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:26,846 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:25:26,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:26,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:25:26,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:25:26,847 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:25:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:26,889 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2024-09-13 06:25:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:25:26,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-09-13 06:25:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:26,890 INFO L225 Difference]: With dead ends: 119 [2024-09-13 06:25:26,890 INFO L226 Difference]: Without dead ends: 119 [2024-09-13 06:25:26,890 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:25:26,891 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:26,891 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 159 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-09-13 06:25:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2024-09-13 06:25:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 87 states have (on average 1.160919540229885) internal successors, (101), 90 states have internal predecessors, (101), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2024-09-13 06:25:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2024-09-13 06:25:26,895 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 37 [2024-09-13 06:25:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:26,895 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2024-09-13 06:25:26,895 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:25:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2024-09-13 06:25:26,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 06:25:26,896 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:26,896 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:26,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-09-13 06:25:26,896 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:26,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash -28372123, now seen corresponding path program 1 times [2024-09-13 06:25:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:26,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560116009] [2024-09-13 06:25:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:26,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:26,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 06:25:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 29 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-13 06:25:26,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:26,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560116009] [2024-09-13 06:25:26,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560116009] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:25:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613925245] [2024-09-13 06:25:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:26,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:26,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:26,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:25:26,940 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 06:25:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:26,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-13 06:25:26,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:25:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-13 06:25:27,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:25:27,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613925245] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:25:27,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:25:27,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-09-13 06:25:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317162083] [2024-09-13 06:25:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:25:27,006 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:25:27,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:25:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:25:27,007 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:27,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:27,047 INFO L93 Difference]: Finished difference Result 129 states and 149 transitions. [2024-09-13 06:25:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:25:27,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2024-09-13 06:25:27,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:27,048 INFO L225 Difference]: With dead ends: 129 [2024-09-13 06:25:27,048 INFO L226 Difference]: Without dead ends: 129 [2024-09-13 06:25:27,048 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:25:27,049 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 17 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:27,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 199 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:25:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-13 06:25:27,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2024-09-13 06:25:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 95 states have internal predecessors, (107), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-13 06:25:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2024-09-13 06:25:27,053 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 44 [2024-09-13 06:25:27,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:27,053 INFO L474 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2024-09-13 06:25:27,053 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:27,053 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2024-09-13 06:25:27,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 06:25:27,053 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:25:27,053 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:27,071 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 06:25:27,257 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:27,258 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION === [multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION, multErr0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (and 1 more)] === [2024-09-13 06:25:27,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:25:27,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1987244588, now seen corresponding path program 2 times [2024-09-13 06:25:27,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:25:27,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723262396] [2024-09-13 06:25:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:25:27,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:25:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:27,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 06:25:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:25:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 27 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 06:25:27,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:25:27,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723262396] [2024-09-13 06:25:27,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723262396] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:25:27,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757539134] [2024-09-13 06:25:27,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:25:27,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:25:27,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:25:27,424 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:25:27,426 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 06:25:27,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:25:27,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:25:27,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 06:25:27,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:25:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:27,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:25:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:25:27,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757539134] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:25:27,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:25:27,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 18 [2024-09-13 06:25:27,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247894550] [2024-09-13 06:25:27,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:25:27,831 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 06:25:27,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:25:27,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 06:25:27,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-09-13 06:25:27,833 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 13 states have internal predecessors, (54), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:25:28,118 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2024-09-13 06:25:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 06:25:28,118 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 13 states have internal predecessors, (54), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-09-13 06:25:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:25:28,119 INFO L225 Difference]: With dead ends: 43 [2024-09-13 06:25:28,119 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 06:25:28,119 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 65 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2024-09-13 06:25:28,120 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 63 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:25:28,120 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 32 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:25:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 06:25:28,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 06:25:28,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:25:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 06:25:28,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2024-09-13 06:25:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:25:28,122 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 06:25:28,122 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 13 states have internal predecessors, (54), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:25:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 06:25:28,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 06:25:28,125 INFO L785 garLoopResultBuilder]: Registering result SAFE for location multiple_ofErr0ENSURES_VIOLATIONPOST_CONDITION (3 of 4 remaining) [2024-09-13 06:25:28,125 INFO L785 garLoopResultBuilder]: Registering result SAFE for location multErr0ENSURES_VIOLATIONPOST_CONDITION (2 of 4 remaining) [2024-09-13 06:25:28,126 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPOST_CONDITION (1 of 4 remaining) [2024-09-13 06:25:28,126 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-09-13 06:25:28,139 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 06:25:28,326 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-13 06:25:28,329 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:25:28,331 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 06:25:28,334 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 06:25:28 BoogieIcfgContainer [2024-09-13 06:25:28,335 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 06:25:28,337 INFO L158 Benchmark]: Toolchain (without parser) took 10386.56ms. Allocated memory was 165.7MB in the beginning and 302.0MB in the end (delta: 136.3MB). Free memory was 108.2MB in the beginning and 210.6MB in the end (delta: -102.4MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2024-09-13 06:25:28,337 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 165.7MB. Free memory is still 127.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:25:28,338 INFO L158 Benchmark]: Witness Parser took 0.22ms. Allocated memory is still 165.7MB. Free memory is still 110.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:25:28,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.67ms. Allocated memory is still 165.7MB. Free memory was 108.2MB in the beginning and 94.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 06:25:28,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.24ms. Allocated memory is still 165.7MB. Free memory was 94.0MB in the beginning and 92.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:25:28,339 INFO L158 Benchmark]: Boogie Preprocessor took 48.86ms. Allocated memory is still 165.7MB. Free memory was 92.4MB in the beginning and 90.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:25:28,339 INFO L158 Benchmark]: RCFGBuilder took 457.68ms. Allocated memory is still 165.7MB. Free memory was 90.9MB in the beginning and 74.0MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-13 06:25:28,339 INFO L158 Benchmark]: TraceAbstraction took 9500.96ms. Allocated memory was 165.7MB in the beginning and 302.0MB in the end (delta: 136.3MB). Free memory was 73.1MB in the beginning and 210.6MB in the end (delta: -137.5MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. [2024-09-13 06:25:28,340 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 165.7MB. Free memory is still 127.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.22ms. Allocated memory is still 165.7MB. Free memory is still 110.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.67ms. Allocated memory is still 165.7MB. Free memory was 108.2MB in the beginning and 94.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.24ms. Allocated memory is still 165.7MB. Free memory was 94.0MB in the beginning and 92.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.86ms. Allocated memory is still 165.7MB. Free memory was 92.4MB in the beginning and 90.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 457.68ms. Allocated memory is still 165.7MB. Free memory was 90.9MB in the beginning and 74.0MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9500.96ms. Allocated memory was 165.7MB in the beginning and 302.0MB in the end (delta: 136.3MB). Free memory was 73.1MB in the beginning and 210.6MB in the end (delta: -137.5MB). Peak memory consumption was 1.8MB. 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: 31]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 17]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 52]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 9.4s, OverallIterations: 22, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 521 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 476 mSDsluCounter, 5365 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4177 mSDsCounter, 162 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1987 IncrementalHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 162 mSolverCounterUnsat, 1188 mSDtfsCounter, 1987 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 674 GetRequests, 445 SyntacticMatches, 30 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=18, InterpolantAutomatonStates: 170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 88 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 786 NumberOfCodeBlocks, 774 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 924 ConstructedInterpolants, 0 QuantifiedInterpolants, 2465 SizeOfPredicates, 30 NumberOfNonLiveVariables, 948 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 37 InterpolantComputations, 16 PerfectInterpolantSequences, 244/461 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 06:25:28,371 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE